public IndexPage(IndexFileInfo inf, byte [] data, DatabaseImp database)
{
if (inf.KeyCount > 100)
{
throw new System.Exception("Max number of index columns exceeded");
}
Inf = inf;
Database = database;
bool leaf = IsLeafPage();
ColStore = leaf ? inf.KeyCount : inf.Types.Length; // Currently these are the same.
NodeSize = NodeOverhead + inf.KeySize() + (leaf ? 0 : PageIdSize);
NodeBase = FixedHeader + (leaf ? 0 : PageIdSize) - NodeSize;
MaxNode = (PageSize - (NodeBase + NodeSize)) / NodeSize;
if (MaxNode > 2047)
{
MaxNode = 2047; // Node ids are 11 bits.
}
if (data == null)
{
Data = new byte[PageSize];
}
else
{
Data = data;
ReadHeader();
}
// Console.WriteLine( "New IndexPage Count=" + Count + " ColStore=" + ColStore + " NodeSize=" + NodeSize + " MaxNode=" + MaxNode );
}
public void OpenIndexes(IndexInfo[] info)
{
IxInfo = info;
long curIndex = -1;
var dt = new G.List <DataType>();
var cm = new G.List <int>();
for (int i = 0; i <= info.Length; i += 1)
{
if (i > 0 && (i == info.Length || info[i].IndexId != curIndex))
{
IndexFileInfo ci = new IndexFileInfo();
dt.Add(DataType.Bigint); // For id value
ci.KeyCount = dt.Count;
ci.Types = dt.ToArray();
ci.BaseIx = cm.ToArray();
ci.IndexId = curIndex;
OpenIndex(curIndex, ci);
dt = new G.List <DataType>();
cm = new G.List <int>();
}
if (i != info.Length)
{
curIndex = info[i].IndexId;
int colIx = info[i].ColIx;
dt.Add(CI.Type[colIx]);
cm.Add(colIx);
}
}
}
public IndexFile( FullyBufferedStream f, IndexFileInfo inf, DatabaseImp d, long indexId )
{
F = f; Inf = inf; Database = d; IndexId = indexId;
Initialise();
//System.Console.WriteLine("New IndexFile " + " Root=" + Root + " PageAlloc=" + PageAlloc );
//Dump();
}
public string ToString( IndexFileInfo Inf ) // For debugging / testing only.
{
string s = "";
for ( int i = 0 ; i < Inf.Types.Length; i+= 1 )
{
s += Util.ToString( Col[ i ], Inf.Types[ i ] ) + "|";
}
return s;
}
public void OpenIndex(long indexId, IndexFileInfo ci)
{
IndexFile ixf;
IxDict.TryGetValue(indexId, out ixf);
if (ixf == null)
{
var stream = Database.OpenFile(FileType.Index, indexId);
IxDict[indexId] = new IndexFile(stream, ci, Database, indexId);
}
}
public PageParent(IndexFileInfo inf, byte [] data, DatabaseImp d) : base(inf, data, d)
{
}
public DatabaseImp( string dirName )
{
Name = dirName;
Log = new Log( Name );
Sys = GetSchema( "sys", true, null );
{
SysString = OpenFile( FileType.System, 0 );
SysStringReader = new BinaryReader( SysString );
SysStringWriter = new BinaryWriter( SysString );
IndexFileInfo ii = new IndexFileInfo();
ii.KeyCount = 1;
ii.Types = new DataType[] { DataType.String };
var f = OpenFile( FileType.System, 1 );
SysStringIndex = new IndexFile( f, ii, this, -1 );
}
{
SysBinary = OpenFile( FileType.System, 2 );
SysBinaryReader = new BinaryReader( SysBinary );
SysBinaryWriter = new BinaryWriter( SysBinary );
IndexFileInfo ii = new IndexFileInfo();
ii.KeyCount = 1;
ii.Types = new DataType[] { DataType.Binary };
var f = OpenFile( FileType.System, 3 );
SysBinaryIndex = new IndexFile( f, ii, this, -2 );
}
var cb = new ColBuilder();
cb.Add( "Name", DataType.String );
SysSchema = NewSysTable( 1, "Schema", cb.Get() );
cb.Add( "Schema", DataType.Int );
cb.Add( "Name", DataType.String );
cb.Add( "IsView", DataType.Tinyint );
cb.Add( "Definition", DataType.String );
SysTable = NewSysTable( 2, "Table", cb.Get() );
cb.Add( "Table", DataType.Int );
cb.Add( "Name", DataType.String );
cb.Add( "Type", DataType.Int );
SysColumn = NewSysTable( 3, "Column", cb.Get() );
cb.Add( "Table", DataType.Int );
cb.Add( "Name", DataType.String );
cb.Add( "Modified", DataType.Tinyint );
SysIndex = NewSysTable( 4, "Index", cb.Get() );
cb.Add( "Table", DataType.Int );
cb.Add( "Index", DataType.Int );
cb.Add( "ColId", DataType.Int );
SysIndexCol = NewSysTable( 5, "IndexCol", cb.Get() );
SysColumn.OpenIndexes( IndexInfo.Single( 1, 1 ) );
SysColumnIndex = SysColumn.FindIndex( 1 );
SysIndexCol.OpenIndexes( IndexInfo.Single( 2, 1) );
SysIndexColIndex = SysIndexCol.FindIndex( 1 );
SysSchema.OpenIndexes( IndexInfo.Single( 3, 1 ) );
SysSchemaByName = SysSchema.FindIndex( 1 );
SysTable.OpenIndexes( IndexInfo.Single( 4, 2 ) );
SysTableByName = SysTable.FindIndex( 2 );
if ( SysSchema.RowCount == 0 )
{
IsNew = true;
Sql( "CREATE SCHEMA sys" ); // Note these are created in TableId order.
Sql( "CREATE TABLE sys.Schema( Name string )" );
Sql( "CREATE TABLE sys.Table( Schema int, Name string, IsView tinyint, Definition string )" );
Sql( "CREATE TABLE sys.Column( Table int, Name string, Type int )" );
Sql( "CREATE TABLE sys.Index( Table int, Name string, Modified tinyint )" );
Sql( "CREATE TABLE sys.IndexCol( Table int, Index int, ColId int )" );
Sql( "CREATE INDEX ColumnByTable on sys.Column(Table)" );
Sql( "CREATE INDEX IndexColByTable on sys.IndexCol(Table)" );
Sql( "CREATE INDEX SchemaByName on sys.Schema(Name)" );
Sql( "CREATE INDEX TableByName on sys.Table(Name)" );
Normal = true;
Sql( "CREATE TABLE sys.Function( Schema int, Name string, Definition string )" );
Sql( "CREATE INDEX FunctionByName on sys.Function(Name)" );
Sql( "CREATE TABLE sys.Procedure( Schema int, Name string, Definition string )" );
Sql( "CREATE INDEX ProcedureByName on sys.Procedure(Name)" );
}
RollbackOrCommit();
Normal = true;
} // end DatabaseImp